Wow! I've got my old 5150, too! I bought it new back in the day, for well over $2000.... and used it for a decade before I put it away. Mine was the "two big floppy drive" version, but I splurged and bought a "HardCard 20" HDD (that's 20mb, not 20 gb) , and a full 640K Ram card. I was cooking with GAS, baby! I especially love the clicky keyboard. They just don't make 'em as well nowadays. Just for the fun of it, I set it up on my desk a few weeks ago and fired it up. It still works perfectly, with it's green letters on a black background. However.... I'm pretty sure that MS does not support DOS2.0, and no security patches are available nowadays.